N20 Gear Motor with Full-Metal Gearbox for Fingerprint Lock, DC 3-4.2V(0)

Compact geared DC motor for small actuators and slider mechanisms. This lightweight, low-power motor offers reversible control and a high reduction ratio for slow, precise motion in tight spaces. Key benefits - Compact and lightweight design simplifies installation in constrained assemblies and portable projects. - High reduction ratio (about 1:103) delivers low output speed and increased torque for controlled movement of sliders and drive nuts. - Color-coded wiring and a 5P socket make connections straightforward and reliable during assembly and maintenance. - Reversible direction using external switches provides flexible control of forward and reverse motion without complex electronics. - Low no-load current across the operating voltage range helps extend battery life in portable applications. Function and wiring - Connector: 5P socket for secure connection. - Wiring assignment: red wire to positive terminal, black wire to negative terminal, yellow wire to motor housing shield ground, the two blue wires are intended for external switches that switch motor polarity to change rotation direction and control slider up or down motion. Performance and electrical specifications - Gear reduction: approximately 1:103. - Rated voltage: DC 3.7 V. - No-load current at rated voltage: 39 mA. - No-load speed at rated voltage: 130 rpm (drive nut speed). - Applicable operating voltage: DC 3.0 V to DC 4.2 V with measured parameters: - At DC 3.0 V: no-load current 36 mA, no-load speed 112 rpm. - At DC 4.2 V: no-load current 42 mA, no-load speed 150 rpm. Physical specifications - Motor weight: approximately 12 grams. - Maximum length: approximately 20.3 mm. - Maximum width: approximately 20 mm. - Maximum thickness: approximately 10 mm. Typical applications - Micro robotics: provides low-speed, high-torque drive for small wheels, gearboxes, or linear actuators in robotics projects. - Camera and optical devices: drives focus or small slider mechanisms that require smooth, reversible motion at low speeds. - Model making and hobby projects: ideal for model trains, scale mechanisms, and toys that need compact reversible actuation. Package contents - Motor x 1. This motor is supplied with complete wiring and dimensional specifications for easy integration into compact actuator systems.